An amplitude and covariance matrix estimator for signals in colored Gaussian noise.
Jesper Højvang JensenMads Græsbøll ChristensenSøren Holdt JensenPublished in: EUSIPCO (2009)
Keyphrases
- covariance matrix
- gaussian noise
- denoising
- gaussian white noise
- estimation error
- noisy images
- covariance matrices
- image restoration
- noise level
- signal to noise ratio
- principal component analysis
- noise model
- noise removal
- signal processing
- maximum likelihood
- noise variance
- salt and pepper noise
- least squares
- sample size
- geometrical interpretation
- impulse noise
- objective function
- image denoising
- principal components
- natural images
- feature extraction
- blind source separation